Do I need to drain my cooling system before swapping this in?

You don't need to completely drain the system, but disconnect the overflow hose from your old tank and cap the radiator before removal. Transfer any remaining coolant from the old tank to a clean container if you want to reuse it. Reinstall and reconnect the hose to the radiator cap's overflow port on the new tank.

Will this tank work with my original radiator cap?

Yes—this tank is designed to connect to your factory radiator cap's overflow line. The connection point and hose routing match OEM specs, so your existing coolant system setup stays intact.

What if the mounting tabs don't line up perfectly?

Factory mounting points are designed to match, but test-fit before final installation. If tabs need minor adjustment, they can be carefully bent or drilled to match your truck's bracket location. Compare the old and new tank side-by-side before committing to fasteners.